Abstract: A fan drive circuit for a variable speed fan motor in a cooling system, includes an inverter configured to supply a current signal to stator windings of the variable speed fan motor, a frequency detection circuit coupled to an output stage of an inverter of a compressor motor of the cooling system and configured to detect a first frequency of a compressor current signal at the output stage of a variable speed compressor drive circuit and generate a frequency signal, and a digital signal processor (DSP) coupled to the inverter and the frequency detection circuit. The DSP is configured to receive the frequency signal corresponding to the first frequency from the frequency detection circuit, select a second frequency corresponding to the first frequency at which to operate the variable speed fan motor, and transmit control signals to the inverter to supply current to the stator windings at the second frequency.

Abstract: This disclosure provides recombinant DNA constructs and transgenic plants having enhanced traits such as increased yield, increased nitrogen use efficiency, and enhanced drought tolerance or water use efficiency. Transgenic plants may include field crops as well as plant propagules and progeny of such transgenic plants. Methods of making and using such transgenic plants are also provided. This disclosure also provides methods of producing seed from such transgenic plants, growing such seed, and selecting progeny plants with enhanced traits. Also disclosed are transgenic plants with altered phenotypes which are useful for screening and selecting transgenic events for the desired enhanced trait.

Abstract: A solar panel tracking system that can simultaneously rotate large arrays of solar panels position in multiple rows utilizing a single drive system. The drive system comprises a single actuation device that drives multiple rotational translation stages at each solar array row for tilting the panels to the correct position. A dual beam structure within each row insure appropriate panel support during rotation and provide the framework for simplified installation and maintenance.

Abstract: An adjustable tilt solar panel support system including a support post, a pivot bracket attached to the support post in a generally upright orientation and having a pivot pin hole for accommodating a pivot pin, and further having at least one adjustment opening; a rotational support cradle having a pivot pin hole in alignment with the pivot pin hole of the pivot bracket, such that the support cradle is pivotally attached to the pivot bracket, the support cradle further including at least one adjustment opening which aligns with the adjustment opening of the pivot bracket. An adjustment pin is selectively inserted into and through the adjustment openings of the support cradle and pivot bracket to secure the support cradle at a selected angle, and wherein the removal of the adjustment pin permits the rotational support cradle to pivot on the pivot bracket about the pivot pin. Beam holders for securing support beams are disposed atop the rotational support cradle.

Abstract: An adjustable tilt solar panel support system including a support post, a pivot bracket attached to the support post in a generally upright orientation and having a pivot pin hole for accommodating a pivot pin, and further having at least one adjustment opening; a rotational support cradle having a pivot pin hole in alignment with the pivot pin hole of the pivot bracket, such that the support cradle is pivotally attached to the pivot bracket, the support cradle further including at least one adjustment opening which aligns with the adjustment opening of the pivot bracket. An adjustment pin is selectively inserted into and through the adjustment openings of the support cradle and pivot bracket to secure the support cradle at a selected angle, and wherein the removal of the adjustment pin permits the rotational support cradle to pivot on the pivot bracket about the pivot pin. Beam holders for securing support beams are disposed atop the rotational support cradle.

Abstract: An adjustable tilt solar panel support system including a support post, a U-shaped pivot bracket attached to the support post in a generally upright orientation and having a pivot pin hole for accommodating a pivot pin, and further having at least one adjustment opening; a rotational support cradle having a pivot pin hole in alignment with the pivot pin hole of the pivot bracket, such that the support cradle is pivotally attached to the pivot bracket, the support cradle further including at least one adjustment opening which aligns with the adjustment opening of the pivot bracket. An adjustment pin is selectively inserted into and through the adjustment openings of the support cradle and pivot bracket to secure the support cradle at a selected angle, and wherein the removal of the adjustment pin permits the rotational support cradle to pivot on the pivot bracket about the pivot pin.

Abstract: An apparatus for mounting an article to a roof includes a base plate, threaded stud, lag bolts, spacer, and flashing. The base plate includes bolt holes to accommodate the lag bolts to secure the base plate to the roof. The threaded stud is secured to and extends vertically from the base plate. The spacer is inserted over the stud so that the stud passes through an aperture in the spacer, and is secured by a nut. The spacer acts as a lift for mounting an article up off the roof, thereby permitting drainage. The spacer includes a recess to accommodate the head of a lag bolt. The wrap-around flashing is captured between the base plate and spacer, creating a water free environment underneath the assembled unit. The flashing slides up underneath the roofing shingles to prevent water from penetrating the structure, and includes a lip to accommodate the base plate, and a detent to accommodate the bolt heads beneath it.

Abstract: An adjustable tilt solar panel support system including a support post, a U-shaped pivot bracket attached to the support post in a generally upright orientation and having a pivot pin hole for accommodating a pivot pin, and further having at least one adjustment opening; a rotational support cradle having a pivot pin hole in alignment with the pivot pin hole of the pivot bracket, such that the support cradle is pivotally attached to the pivot bracket, the support cradle further including at least one adjustment opening which aligns with the adjustment opening of the pivot bracket. An adjustment pin is selectively inserted into and through the adjustment openings of the support cradle and pivot bracket to secure the support cradle at a selected angle, and wherein the removal of the adjustment pin permits the rotational support cradle to pivot on the pivot bracket about the pivot pin.

Abstract: An apparatus for mounting an article to a roof includes a base plate, threaded stud, lag bolts, spacer, and flashing. The base plate includes bolt holes to accommodate the lag bolts to secure the base plate to the roof. The threaded stud is secured to and extends vertically from the base plate. The spacer is inserted over the stud so that the stud passes through an aperture in the spacer, and is secured by a nut. The spacer acts as a lift for mounting an article up off the roof, thereby permitting drainage. The spacer includes a recess to accommodate the head of a lag bolt. The wrap-around flashing is captured between the base plate and spacer, creating a water free environment underneath the assembled unit. The flashing slides up underneath the roofing shingles to prevent water from penetrating the structure, and includes a lip to accommodate the base plate, and a detent to accommodate the bolt heads beneath it.

Abstract: A solar array tracker controller including an operator programmable micro- processor electronically connected to the drive motors in a solar panel array or other solar device array.

Abstract: A grid-connected photovoltaic electrical power system with both array level and string level remote monitoring and production and efficiency analysis capabilities. The inventive system includes an array level monitoring component, software for recording and analyzing data obtained through the array level monitoring component, and a string level monitoring component.

Abstract: A solar panel tracking system that can simultaneously rotate large arrays of solar panels position in multiple rows utilizing a single drive system. The drive system comprises a single actuation device that drives multiple rotational translation stages at each solar array row for tilting the panels to the correct position. A dual beam structure within each row insure appropriate panel support during rotation and provide the framework for simplified installation and maintenance.

Abstract: A breather filter is assembled within a disc drive by positioning the filter atop a flex circuit bracket on a base plate of the drive. A breather port is formed through a top cover of the disc drive, and an inlet of the breather filter is sealed against the top cover of the drive. Compressing the top cover against the top of the breather filter helps to retain the filter in position between the flex circuit bracket and the top cover without an adhesive connection to the top cover. The connection of the breather filter to the flex circuit bracket allows a top-down assembly of the disc drive so that an adhesive connection between the filter and the top cover of the drive is not required.